When growing-up, I used to be puzzled as to why the glossy books about treasure-hunting and legends, were always stored in the children's section and never in the adults non-fiction area. I made a solemn promise never to touch or peruse a book with shiny overflowing treasure-chests or piles of heaped gold and jewels on the front cover.
Corp is absolutely right, the vast majority of books are the same plagiarised nonsense in which the 'authors' have never done any "real" research and rely on previous rehashed myths, legends and stories. After many years of growing frustrated by searching for proper books on the subject, I have determined a new way of checking any particular book for authenticity and truth.
I will always maintain that any true and real treasure-hunter, would wish to remain as below the radar as is physically possible. Why oh why would you wish to have a camera crew in tow??
It is all just a gimmick as most will swallow the sad nonsense that is being peddled, due to never having the opportunity to really know what such a career or job in the field actually entails. Most folks need the media to help them formulate their views and opinions and doing so themselves is slightly 'testing' for them. The absolute same applies to the world of treasure.
Another point I wish to make is, the overwhelming majority will never have the resources, knowledge, experience or skills to be successful in the wonderfully mysterious world of treasure-hunting. Most who get 'wealthy' through this way are simply emptying old tombs and graves of small artefacts left for the deceased from centuries gone by. No proper skills needed other than an indifference in morals and standards. To uncover a possible treasure lead, investigate it, gather evidence, formulate a strategy, secure a team and the legal aspects before seeing a single penny in return, is beyond most. Sadly you need a fortune to dig for a fortune. I hope the irony is not lost.
But. But, if one does happen to come across an obscure text, reference, story or lead, then has some capacity to travel and do some relevant research, well, there is nothing stopping one from pursuing what they have always dreamed and imagined!

IPUK (who is now dreaming and imagining of long-lost treasures himself

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